Deinking apparatus



March 19, 1929. J. DE WITT DEINKING APPARATUS Filed July 2?, 1927 2 Sheets-Sheet 1 Y INVEIIVILOR.

Y BY) 7 Q A Z March 19, 1929; J. DE wrrr. 1,705,908

' DEINKING APPARATUS Filed July 27, 1927 21Sheets-Sheet' 2 'INVENTOR.

:4TTORNEY Patented Mar; 19,. 1929.

V NITED STAT JENNI G IDE Wm,

01'? NEW YORK, n. Y.

V nemmm APPARATUS.

Application filed my '27;

This invention relates to improvements in denklng paper. p v The invention has particular reference to an improved pump mechanism of the general 5 type referredto in my co-pending application 6. N. 205.608, filed" July 14, 1927.)i;

Whichthis. application is acontinuation in part.- y

Anobject of the invention relates to im- 10 proved means for dehydrating fibrous materialto prepare th'e'material for subsequent use in making paperj An important feature Ofthe invention is an improved [piston including means for I inaintalning'in positlon thereon, a 1115183101:

sponge rubber or like material, whereby the material may be alternately compressed and expanded so as to remove fluid. I

Another important feature relates to the 20 provision of means forefiectively liinitingthe expansive movement of the sponge rubber.

' Aecordingjto this feature the material being acted upon cannotclog the inechanism,and is positively ejected when sufficien ly j l dist-editor subsequenttreatment. V

Other objects Will'appear fr'ointhe followi-ng description, taken in connection with the accompanying drawings, in hich,

Fig. 1 is aside" elevation of a pump mechanism embodying features of the invention;

Fig. 2 is a vertical sectional view ofthe cylinder'of Fig.1;

N Fig. 3 is a section taken on the line 3-3 of g; 2; i Fig. lis a vertical sectional view-similar to that ofFig'. 2 but with the piston in com pressed position; v

Fig. 5 is a section taken on the line 5'5 of y. t L Fig. 6 is a section taken on the line 6'6 of Fig.2; and v J Fig. 7 is a perspective view of the maintaining means of'Fig'. 2.

Like reference characters denote like parts in the several figures of the drawing. 7 y In the following description andelaiins, parts characteristic features and functions Will be identified by specific means for'convenience of e'zqiression, but they are intended to be as genericin their application to similar parts-or equivalent construction as the art will permit. Referring particularly'to Fig. l'there is shown a central pump mechanism mounted I on a base 10,11'avinga pedestal l1 thereonfor M sup ortin a cylinder 12. A support 13 is secured tothe base apart from the pedestal llfo'r supporting a guideway lflin alineinent with the axis of the'cylinder 12. A piston headshown generally'at 15 is slidably mounted Within the chamber ol the cylinder 12 and 1s actuated by a piston rod 16 extending through the end WaILCdeSignatedas at '17, of the cylinder 12. The outer end olt'the connect-- in g rod'16 is pivetally connected to e 'pitinan 1 8 andthus to a flywheel 19 which is opera tl'vely connected 111 any su table manner, as by i preferably in the form ofan electricinot'or 20. The p1sto1 15'is snugly fitted in the'loore of the cylinder 12 and includes' an annular po rtion of relatively thin metal which tenninates at one end in a pair o' f c b'seamgs 31, 31 to Which the pistonrod 16 is connected, and which is provided With a spider 32 (see Fig.

A Wire screenorxgrid esformed for example oil/ inch ire net or the'li'k'e is positioned in contact with the inner faee or the spider 32. A mass of 'eon'ipress'ible material 34, preferablyof sponge rubber or fiber mat material is mounted'withinth annular Wall 30, andis maintained'in Ipla'ce adja'eent the screen 33 by a'cage 35 (see Fig. 7). The free edge of the Wall portioni 3o of the piston is bevelled as zit-'36 w s to scrape material from the inner. Wall of the'cylin'der. M

The cage 35 comprises apai'r 'of U shaped members 40, 41 secured as at 42 by 'a'r'i'ng'. 43 fastened to the intermediate portions of the members 40, 41. in any desired manner as by spot Welding. The free ends of the members 40, 41 are each inserted through apertures such as 44in the spider The piston is assembled by seating the sponge rubber within the cage 35, applying the cage to the spider, and then bending the endso'f the me'mbersO, ll. as clearly-indicated at 45 in Fig. 2. The bent ends 45 effectively limit the movement of th ecage 35 Wltll respect to thereinainder ofthe piston. v H 4 Th'e" pump mechanism as illustrated includesa lrota'ry valve comprising a disc po sitioned in a valve chajmber51 in thefreeend wall o f'thecylinder 12.. The disc 50 is provided withperipheralteetli 52 engaging a pinion 53. The'dise50isaperturedas 3.554,

the aperture beingarranged to register in different posit-ions of the with an inlet port 55, and an outlet port 56. 1The inlet port 55 communicates with a material feed; pipe 57 through which material to be acted upon may be introduced into the "cylinder, The outlet a; speed reduction gear to a source of power,

die 73. The interior of the cylinder 12 near the rotary valve is provided with a supply pipe 7 4 through which clean ilui d may be injected into the cylinder. The other end or the cylinder is of relatively enlarged internal diameter as indicated at 75 and. the chamber thus formed is in comnninication with an outlet pipe 7 6 for discharge of slush fluid.

In operation, the motor 20 having been started, the valve controller 7 3 is controlled to permit a measured quantity of material to be acted upon to be introduced into the interior of the cylinder 12. The piston 15 is drawn fully to the left of Fig. 2 and the cylinder is completely filled. The handle 73 is then operated so as to close both valve ports, 54, 55. The piston 15 is then moved to the right under control of the motor 20. During the movement of the piston towards the right, the sponge rubber 34 is compressed against the material being acted upon, and takes up the position shown in Fig. 5. It will be seen that the wire cage 35 is freely movable with respect to the annular portion and moves with the front face of the sponge rubber. The reciprocating action is repeated as many times as may be des red, the sponge rubber alternately being compressed and expanded. As the sponge rubber expands it soaks up fluid from the material, and releases this fluid near the left hand end of the cylinder. The released i'luid flows out through the pipe 76. The characteristics of the sponge rubber are such that it does not take up the fibrous material being acted on. After several strokes of the piston 15 have been made a quantity of clean water may, be introduced through the pipe 74. Before the commencement of the last right hand stroke of the piston the handle 73 is manipulated so as to open the discharge port 56, and the dehydrated mass of material is forced out through the pipe 58.

Theinvention upon which this application is based is broader thanthe specific embodiment shown and described forthe purpose of illustrating at least one of the ways in which it may be employed. The scope of the invention is, therefore, to be understood as not being limited by the present specific description. I intend no limitations other than those imposed by the claims.

What is claimed is 1. -Means for dehydrating a mixture, comprising a reciprocating piston, a mass of sponge material arranged for compression and expansion in contact with the material being treated, and means torlnniting the ex pansive movement of said sponge material.

2. Adehydrating mechanism including a cylinder, means for introducing thereina mixture to be treated, a piston slidably mount ed in said cylinder, means for reciprocating said piston, a mass of compressible material mounted on said piston, and means slidably mounted on the piston for maintaining said 7 of relatively thin metal, means operatively connected to one end or said piston for reciprocating the same, a mass of sponge rubber positioned within said annular portion and arranged for compression and expansion in contact with the mixture being treated, and an open network slidably mounted on said piston for limiting the expansive movement of the sponge rubber. 1

5. A dehydrating mechanism including a cylinder, means for introducing therein a mixture to be treated, a piston slidably mounted in said cylinder, said piston being open at both ends, a mass of sponge rubber mounted within said piston and arranged for compression and expansion in contact with the mixture, and means slidably mounted on the piston for limiting the expansive movement of the rubber.

6. Means for dehydrating a mixture, comprising a reciprocating piston, a mass of porous compressible material positioned thereon to contact with mixture to be treated,

and a Wire cage slidably mounted on said piston for limiting the expansive movement of the compressible material.

7. Means for dehydrating a mixture, comprising a member having an annular portion of relatively thin metal, means operatively connected thereto for reciprocating the member, a mass of porous compressible material positioned within said annular portion and arranged for compression and expansion in contact with the mixture being treated, and a wire net work slidably mounted on said member for limiting the expansive movement of the compressible material.

8. A dehydrating mechanism including a cylinder, means for introducing therein a mixture to be treated, a sleeve slidably mount ed in said cylinder, said sleeve being open at both ends, a mass of porous compressible material mounted within said sleeve and arranged for compression and expansion in contact with the mixture, and means slid-' .ably mounted on the piston-for limiting the sponge rubber held thereby arranged forcompression and expansion in contact With the material being treated.

, 10; Means for dehydrating a mixture coinsponge rubber arranged for compression and expansion in Contact with the material being 4 treated and. a screen for maintalnlng the sponge rubber on the piston.

10 prising a. reciprocating piston, amass of Signed at New York in the county of New of New York.

York and State I JENNINGS DE WITT. 

